:root{
  --navy:#0A1628; --fill:#0066CC; --blue:#0066CC; --blue-soft:#E3EEFA; --blue-ink:#004C99;
  --alert:#B42318; --alert-soft:#FEF0EE;
  --bg:#F5F8FC; --surface:#FFFFFF; --ink:#0A1628; --muted:#475569; --line:#D5DEEA; --focus:#0066CC;
  color-scheme:light; box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --blue:#4D9BF0; --blue-soft:#111F35; --blue-ink:#4D9BF0;
  --alert:#FF8A7A; --alert-soft:#2A1414; --bg:#0A1628; --surface:#111F35; --ink:#FFFFFF; --muted:#94A3B8; --line:#1E2D48; --focus:#4D9BF0; color-scheme:dark}}
:root[data-theme="dark"]{
  --blue:#4D9BF0; --blue-soft:#111F35; --blue-ink:#4D9BF0;
  --alert:#FF8A7A; --alert-soft:#2A1414; --bg:#0A1628; --surface:#111F35; --ink:#FFFFFF; --muted:#94A3B8; --line:#1E2D48; --focus:#4D9BF0; color-scheme:dark}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 116px);scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.65 Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;-webkit-text-size-adjust:100%}
a{color:var(--blue);text-underline-offset:3px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{font-family:Outfit,Inter,system-ui,Arial,sans-serif;line-height:1.2;margin:0}
.wrap{max-width:46rem;margin:0 auto;padding:0 1.25rem}
.skip{position:absolute;left:-999px;top:0}
.skip:focus{left:1rem;top:1rem;background:var(--surface);padding:.5rem 1rem;z-index:20}
.bar{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}
.bar-in{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 1.25rem;max-width:72rem;margin:0 auto}
.brand{display:inline-block;padding:4px 30px 4px 0;line-height:0}
.brand img{height:30px;width:auto;display:block}
.langs{display:flex;gap:.25rem;flex-wrap:wrap}
.langs button{font:600 .9rem/1 Inter,Arial,sans-serif;border:1px solid var(--line);background:var(--surface);color:var(--ink);padding:.55rem .75rem;border-radius:999px;cursor:pointer;min-height:40px}
.langs .short{display:none}
@media (max-width:520px){.langs .full{display:none}.langs .short{display:inline}.langs button{padding:.55rem .6rem}}
.langs button[aria-pressed="true"]{background:var(--fill);border-color:var(--fill);color:#fff}
nav.toc{border-top:1px solid var(--line);overflow-x:auto;-webkit-overflow-scrolling:touch}
nav.toc ul{display:flex;gap:1.25rem;list-style:none;margin:0 auto;padding:.6rem 1.25rem;max-width:72rem;white-space:nowrap}
nav.toc a{color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:500}
nav.toc a:hover{color:var(--blue)}
header.hero{padding:3.5rem 0 2rem}
.hero h1{font-size:clamp(2.2rem,6vw,3.4rem);font-weight:700;letter-spacing:-.02em;max-width:14ch}
.hero p.sub{font-size:1.2rem;color:var(--muted);margin:1rem 0 0;max-width:36rem}
.hero p.intro{margin:1rem 0 0;max-width:36rem}
.tools{margin:0 0 1rem}
.btn{font:600 .95rem/1 Inter,Arial,sans-serif;border:1px solid var(--blue);color:var(--blue);background:transparent;padding:.7rem 1rem;border-radius:8px;cursor:pointer;min-height:44px}
.urgent{background:var(--alert-soft);border:1px solid var(--alert);border-radius:6px;padding:1.5rem 1.5rem 1.25rem;margin:1rem 0 3rem}
.urgent h2{font-size:1.4rem;color:var(--alert);margin-bottom:1rem}
.urgent dl{margin:0;display:grid;grid-template-columns:1fr;gap:.85rem}
.urgent dt{font-weight:600}.urgent dd{margin:.15rem 0 0}
.big{font:700 1.3rem/1.2 Outfit,Arial,sans-serif;color:var(--ink);text-decoration:none;border-bottom:2px solid var(--alert)}
@media (min-width:640px){.urgent dl{grid-template-columns:1fr 1fr;column-gap:2rem}}
section{padding:2.75rem 0;border-top:1px solid var(--line)}
section h2{font-size:clamp(1.6rem,4vw,2.1rem);font-weight:700;letter-spacing:-.015em;margin-bottom:.75rem}
p.lead{color:var(--muted);margin:0 0 1.5rem;max-width:38rem}
h3.sm{font-size:1.2rem;margin:2rem 0 .75rem}
details.risk{border:1px solid var(--line);border-radius:8px;background:var(--surface);margin:0 0 .75rem}
details.risk summary{cursor:pointer;padding:1rem 1.15rem;font:600 1.15rem/1.3 Outfit,Arial,sans-serif;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
details.risk summary::-webkit-details-marker{display:none}
details.risk summary::after{content:"+";font-size:1.4rem;color:var(--blue);flex:0 0 auto}
details.risk[open] summary::after{content:"\2212"}
details.risk .body{padding:0 1.15rem 1.15rem}
details.risk .body p{margin:0 0 .9rem}
details.risk h4{font-size:1rem;margin:1rem 0 .4rem}
details.risk ol,details.risk ul{margin:0;padding-left:1.25rem}
details.risk li{margin:.25rem 0}
.callout{padding:.75rem 1rem;margin:1rem 0 0;background:var(--blue-soft);border-radius:6px;font-weight:600}
.practices{list-style:none;margin:0;padding:0;display:grid;gap:1.25rem}
.practices li{padding-bottom:1.1rem;border-bottom:1px solid var(--line)}
.practices strong{display:block;font-family:Outfit,Arial,sans-serif;font-size:1.12rem;font-weight:600}
.practices span{color:var(--muted)}
.ages{display:grid;gap:1.5rem}
.ages > div{display:grid;grid-template-columns:9.5rem 1fr;gap:1.25rem;padding-bottom:1.5rem;border-bottom:1px solid var(--line)}
.ages > div:last-child{border-bottom:none}
.ages .tag{font:700 1.2rem/1.2 Outfit,Arial,sans-serif;color:var(--blue-ink)}
.ages .tag small{display:block;font:400 .85rem/1.35 Inter,Arial,sans-serif;color:var(--muted);margin-top:.3rem}
.ages h3{font-size:1.1rem;margin-bottom:.35rem}
.ages ul{margin:0;padding-left:1.15rem}.ages li{margin:.2rem 0}
@media (max-width:520px){.ages > div{grid-template-columns:1fr;gap:.25rem}}
dl.kv{margin:0;display:grid;gap:1rem}
dl.kv dt{font-weight:600;font-family:Outfit,Arial,sans-serif;font-size:1.08rem}
dl.kv dd{margin:.15rem 0 0;color:var(--muted)}
.note{background:var(--blue-soft);padding:1rem 1.25rem;border-radius:6px;margin-top:1.5rem}
.signs{display:grid;gap:1.75rem}
.signs h3{font-size:1.2rem;margin-bottom:.4rem}
.signs ul{margin:0;padding-left:1.2rem}.signs li{margin:.25rem 0}
ol.steps{counter-reset:s;list-style:none;margin:0;padding:0}
ol.steps li{counter-increment:s;position:relative;padding:0 0 1.25rem 3rem}
ol.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:2rem;height:2rem;border-radius:50%;background:var(--fill);color:#fff;font:700 1rem/2rem Outfit,Arial,sans-serif;text-align:center}
ol.steps strong{display:block;font-family:Outfit,Arial,sans-serif;font-size:1.1rem}
.warn{display:block;margin-top:.4rem;padding:.6rem .8rem;border:1px solid var(--alert);background:var(--alert-soft);border-radius:6px;font-weight:500}
.sext{margin-top:1.5rem;padding:1.5rem;border:2px solid var(--line);border-radius:8px}
.sext h3{font-size:1.25rem;margin-bottom:.6rem}
.sext ul{margin:0;padding-left:1.2rem}.sext li{margin:.35rem 0}
section.kids{background:var(--blue-soft);border-top:none}
section.kids h2{color:var(--blue-ink)}
.tabs{display:flex;gap:.5rem;flex-wrap:wrap;margin:0 0 1.5rem}
.tabs button small{display:block;font:500 .78rem/1.2 Inter,Arial,sans-serif;margin-top:.3rem;opacity:.85}
.tabs button{font:700 1.15rem/1 Outfit,Arial,sans-serif;padding:.8rem 1.15rem;border-radius:12px;border:2px solid var(--blue);background:transparent;color:var(--blue-ink);cursor:pointer;min-width:4.5rem;min-height:48px}
.tabs button[aria-selected="true"]{background:var(--fill);border-color:var(--fill);color:#fff}
.panel h3{font-size:1.5rem;color:var(--blue-ink);margin-bottom:.25rem}
.panel .age{color:var(--muted);margin:0 0 1.25rem}
.panel ul{list-style:none;margin:0;padding:0;display:grid;gap:.9rem}
.panel li{background:var(--surface);border-radius:14px;padding:1rem 1.15rem;font-size:1.1rem;line-height:1.5;border:1px solid var(--line)}
.panel .promise{margin:1.5rem 0 0;font:600 1.15rem/1.45 Outfit,Arial,sans-serif;color:var(--blue-ink)}
.panel .adult{margin:1rem 0 0;color:var(--muted);font-size:.98rem}
.check{list-style:none;padding:0;margin:0 0 1rem;display:grid;gap:.6rem}
.check li{display:flex;gap:.75rem;align-items:flex-start}
.check li::before{content:"";flex:0 0 1.15rem;height:1.15rem;margin-top:.3rem;border:2px solid var(--muted);border-radius:3px}
.starters{list-style:none;padding:0;margin:0;display:grid;gap:.75rem}
.starters li{font:500 1.1rem/1.45 Outfit,Arial,sans-serif;padding:.75rem 1rem;background:var(--surface);border:1px solid var(--line);border-radius:8px}
.res{display:grid;gap:1.1rem;margin:0}
.res div{padding-bottom:1.1rem;border-bottom:1px solid var(--line)}
.res dt{font-weight:600;font-family:Outfit,Arial,sans-serif;font-size:1.1rem}
.res dd{margin:.2rem 0 0;color:var(--muted)}
.res .act{color:var(--ink);display:block;margin-top:.2rem}
.res .big{font-size:1.1rem}
ol.src{padding-left:1.25rem;margin:0;font-size:.95rem}
ol.src li{margin:.35rem 0}
footer{padding:2.5rem 0 3rem;border-top:1px solid var(--line);color:var(--muted);font-size:.95rem}
footer p{margin:.4rem 0}
@media print{
  .bar,.tabs,.skip,.tools{display:none}
  .panel[hidden]{display:block!important}
  details.risk > .body{display:block}
  body{background:#fff;color:#000}
  a{color:#000}
}
.noscript{padding:3rem 0}

/* human layer: letter, tonight, prose facts */
section.start{border-top:none;padding-top:.5rem}
.letter{max-width:36rem}
.letter h2{font-size:1.5rem;margin-bottom:.9rem}
.letter p{margin:0 0 .9rem;font-size:1.1rem;line-height:1.7}
.letter .sign{font:600 1.15rem/1.3 Outfit,Arial,sans-serif;color:var(--blue-ink);margin-top:1.1rem}
.tonight-h{font-size:1.3rem;margin:2.75rem 0 1rem}
.tonight{display:grid;gap:1rem;grid-template-columns:1fr}
@media (min-width:720px){.tonight{grid-template-columns:repeat(3,1fr)}}
.tonight > div{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:1.1rem 1.15rem}
.tonight h4{font-size:1.08rem;margin-bottom:.4rem}
.tonight p{margin:0;color:var(--muted);font-size:1rem}
.prose p{margin:0 0 1rem;font-size:1.1rem;line-height:1.75;max-width:38rem}
.prose strong{color:var(--blue-ink)}
.prose sup{font-size:.7em;margin-left:1px}
.prose sup a{text-decoration:none}
@media (max-width:520px){.ages > div{grid-template-columns:1fr;gap:.35rem}}